code: def test_to_string_utm():
      # Make a string from a mapping with a few bogus items
      val = {
          "proj": "utm",
          "ellps": "WGS84",
          "zone": 13,
          "no_defs": True,
          "foo": True,
          "axis": False,
          "belgium": [1, 2],
      }
      assert crs.CRS.from_user_input(val).to_string() == "EPSG:32613"
  
file_path: Fiona/tests/test_crs.py
imports: import pytest
  from .conftest import requires_gdal33
  from fiona import crs
  from fiona.env import Env
  from fiona.errors import CRSError, FionaDeprecationWarning
label_desc: Use image node_id 3 for calling a global function with example usage: test_to_string_utm() without return types